Home / 11,782.13-17,673.59-3,991.55

Finding the Fourth Proportional to 11,782.13, 17,673.59 and 3,991.55

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Solution

The fourth proportional to 11,782.13, 17,673.59 and 3,991.55 is: 5,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,782.13 : 17,673.59 = 3,991.55 : x
  2. Step 2: Convert to fraction form
    11,782.13/17,673.59 = 3,991.55/x
  3. Step 3: Cross multiply
    11,782.13x = 17,673.59 × 3,991.55
  4. Step 4: Simplify right side
    11,782.13x = 70,544,939.78
  5. Step 5: Solve for x
    x = 70,544,939.78/11,782.13
  6. Step 6: Final answer
    x = 5,987.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.